m7-common: declare CIRModule.apk as pre-signed

Change-Id: If61a631c774641b8e4c5e7eeabb5b0399c9350fd
selinux: Don't reset inherited system-wide configs
m7-common: remove duplicated sound device

Change-Id: I6ddd09ed36eabf81390d028a5277a743ed5dffd8
merge changes from CyanogenMod 10.2 into local branch